Inventor · disambiguated record
Leo J. Letendre
Also filed as: LETENDRE LEO J · LETENDRE LEO JOSEPH
20 granted patents·5 pending applications·114 citations·filing 1996–2020
94Inventor score
Top patents by PatentIndex Score
25 records- 0192US7129345B2Keto-substituted steroid compoundsPHARMACIA CORP·Filed 2005·Granted Oct 31, 2006·8 cites·17 claims
- 0291US5981744AProcesses for preparation of 9,11-epoxy steroids and intermediates useful thereinSEARLE & CO·Filed 1996·Granted Nov 9, 1999·38 cites·26 claims
- 0386US10653794B2Capped and uncapped antibody cysteines, and their use in antibody-drug conjugationPFIZER·Filed 2016·Granted May 19, 2020·4 cites·6 claims
- 0478US6610844B2Processes for preparation of 9,11-epoxy steroids and intermediates useful thereinSEARLE & CO·Filed 2002·Granted Aug 26, 2003·11 cites·18 claims
- 0578US6140505ASynthesis of benzo fused heterocyclic sulfonyl chloridesSEARLE & CO·Filed 1998·Granted Oct 31, 2000·15 cites·16 claims
- 0677US6887991B1Processes for preparation of 9, 11-epoxy steroids and intermediates useful thereinSEARLE & CO·Filed 2003·Granted May 3, 2005·8 cites·6 claims
- 0776US7759497B2Synthesis of diaryl pyrazolesPFIZER·Filed 2006·Granted Jul 20, 2010·2 cites·4 claims
- 0876US6180780B1Processes for preparation of 9,11-epoxy steroids and intermediates useful thereinSEARLE & CO·Filed 1999·Granted Jan 30, 2001·10 cites·8 claims
- 0975US6335441B15β-cyano-substituted steroid compoundsSEARLE & CO·Filed 2000·Granted Jan 1, 2002·2 cites·13 claims
- 1072US6630587B2Processes for preparation of 9,11-epoxy steroids and intermediates useful thereinSEARLE & CO·Filed 2001·Granted Oct 7, 2003·3 cites·4 claims
- 1171US7112669B2Processes for preparation of 9,11-epoxy steroids and intermediates useful thereinPHARMACIA CORP OF PFIZER INC·Filed 2005·Granted Sep 26, 2006·1 cites·20 claims
- 1271US6586591B2Process for preparation of 9,11-epoxy steroids and intermediates useful thereinSEARLE & CO·Filed 2001·Granted Jul 1, 2003·1 cites·11 claims
- 1368US7141678B2Synthesis of diaryl pyrazolesPHARMACIA CORP·Filed 2003·Granted Nov 28, 2006·4 cites·24 claims
- 1465US6953851B2Processes for preparation of 9,11-epoxy steroids and intermediates useful thereinSEARLE & CO·Filed 2003·Granted Oct 11, 2005·1 cites·16 claims
- 1562US11980669B2Capped and uncapped antibody cysteines, and their use in antibody-drug conjugationPFIZER·Filed 2020·Granted May 14, 2024·0 cites·5 claims
- 1662US2007060746A1Processes for preparation of 9,11 epoxy steroids and intermediates useful thereinG D SEARLE LLC FORMERLY NAMED·Filed 2006·Application pending·0 cites
- 1760US10508081B2Intermediates and methods for synthesizing calicheamicin derivativesPFIZER·Filed 2018·Granted Dec 17, 2019·0 cites·47 claims
- 1860US9902691B2Intermediates and methods for synthesizing calicheamicin derivativesPFIZER·Filed 2014·Granted Feb 27, 2018·0 cites·5 claims
- 1959US6331622B1Processes for preparation of 9, 11-epoxy steroids and intermediates useful thereinSEARLE & CO·Filed 1999·Granted Dec 18, 2001·6 cites·55 claims
- 2057US2008027237A1Processes for preparations of 9,11-epoxy steroids and intermediates useful thereinNG JOHN S·Filed 2006·Application pending·0 cites
- 2155US7038040B2Process for preparation of 9, 11-epoxy steroids and intermediates useful thereinSEARLE & CO·Filed 2003·Granted May 2, 2006·0 cites·18 claims
- 2251US6258946B1Keto-Substituted Steroid CompoundsSEARLE & CO·Filed 2000·Granted Jul 10, 2001·0 cites·4 claims
- 2350US2002019522A1Processes for preparation of 9-11, epoxy steroids and intermediates useful thereinFiled 2001·Application pending·0 cites
- 2450US2002016455A1Processes for preparation of 9,11- epoxy steroids and intermediates useful thereinFiled 2001·Application pending·0 cites
- 2534US2003105334A1Method for preparing benzenesulfonyl compoundsFiled 2002·Application pending·0 cites
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